I've been starting to feel this as well. I isolate tracking cookies from the big ad networks and it shows.

Another one on the list now is Amazon adding amazon.com redirects around IMDB pages. I can't even follow IMDB links anymore without getting trapped in broken redirects, because my Amazon cookies are in another session and whatever challenge they are running on amazon.com is bad at completing redirects and keeps redirecting brokenly encoded addresses that are 404 pages instead. I have to search things from IMDB in an Amazon container to get it to take me to the same addresses the direct link should have and used to in any container.